Difference in PPM, which one is correct?

[PoolDoc]

Don't know but 5 discovered on my own thatn 5 minutes ofent ws not long

Didja spill some bleach on your keyboard??

[waterbear]

Using the notebook and just not used to the small keyboard! That's what I get for perusing the board by the pool instead of soaking in the hot tub with a beverage!

[PoolDoc]

Yeah, I've got to get a iPad soon. About 15% of my users, are using one, and the percentage is climbing fast.

(Susan doesn't usually get excited about new tech -- she just sees $'s going down the drain -- but she'll get the iPad come fall, and she can think of a number of ways that one could help her as she moves among classrooms.)

[cjryan33]

So the Taylor Salt Water test kit came in and I was able to test the water last night. The Goldline system is reading 2700ppm and the test kit stated that I was at 2800ppm. It appears that my system is closer to the actual levels than the pool store. The said my levels were at 3100ppm. This makes me feel better.

[PoolDoc]

I'm glad it worked out for you . . . and a little surprised that the results are so close together. That does suggest that your actual salt level is somewhere between 2650 and 2850 ppm -- it may not seem like it, but that's a really high accuracy reading!

[waterbear]

Also realize taht the goldine precision is as high as 800 ppm so both your reading AND the pool store reading are in spec!